. >> i want to turn to a clip from a cbs report on the tartheh tar sands project. according to earth energy resources, there's now revolutionary clean technology involving, of all things, oranges. >> if you get all of this out of the ground, separate the oil from the sand, and put all the land back where it came from cleanly, that is exactly with the calgary, the behind this project says it can do with a secret formula, incredibly, involving something you can find any grocery store -- oranges >> a recipe they say can keep you talk beautiful while mining for oil. >> the company president says his patent pending process with citrus extract does the unthinkable. it takes oil from the sand, leaving no pools of toxic waste and will not permanently scar the land. >> our long-term environmental footprint is almost nil. i can say that with high degree of confidence. >> this company video shows the only byproduct is the sand itself, later used to landscape. >> if we cannot do it, then we will go back to canada. >> john weisheit, can you talk about the citrus solution? >> it